<?php

function getRequestMethod() {

    if (isset($_SERVER['HTTP_METHOD'])) {
        return $_SERVER['HTTP_METHOD'];
    } else {
        return isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : false;
    }
}

function getRequestVarsGET() {
    //Change $_POST to $_GET or $_REQUEST if you like
    $variables='';
    foreach ($_GET as $name => $value) {
        $variables.=$name."=".$value."&";
    }
    
    return $variables;
}

function getRequestVarsPOST() {
    //Change $_POST to $_GET or $_REQUEST if you like
    $variables='';
    foreach ($_POST as $name => $value) {
        $variables.=$name."=".$value."&";
    }

    return $variables;
}

function getRequestVarsREQUEST() {
    //Change $_POST to $_GET or $_REQUEST if you like
    $variables='';
    foreach ($_REQUEST as $name => $value) {
        $variables.=$name."=".$value."&";
    }

    return $variables;
}

function getRequestIntegerParameter($parameterName) {
    if (isset($_REQUEST[$parameterName])) {
        $param = $_REQUEST[$parameterName];
        if ($param > -65536 && $param < 65536) {
            return $param;
        }
    }
    return null;
}

function getRequestParameter($parameterName) {
    if (isset($_REQUEST[$parameterName])) {
        $param = $_REQUEST[$parameterName];
        if ($param == "" || trim($param) == "") {
            return null;
        }
        return trim($param);
    }
    return null;
}

/**
 * Access the HTTP Request
 */
class http_request {

    /** additional HTTP headers not prefixed with HTTP_ in $_SERVER superglobal */
    var $add_headers = array('CONTENT_TYPE', 'CONTENT_LENGTH');

    /**
     * Construtor
     * Retrieve HTTP Body
     * @param Array Additional Headers to retrieve
     */
    function http_request($add_headers = false) {
        $this->retrieve_headers($add_headers);
        $this->body = @file_get_contents('php://input');
    }

    /**
     * Retrieve the HTTP request headers from the $_SERVER superglobal
     * @param Array Additional Headers to retrieve

     */
    function retrieve_headers($add_headers = false) {
        if ($add_headers) {
            $this->add_headers = array_merge($this->add_headers, $add_headers);
        }

        if (isset($_SERVER['HTTP_METHOD'])) {
            $this->method = $_SERVER['HTTP_METHOD'];
            unset($_SERVER['HTTP_METHOD']);
        } else {
            $this->method = isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : false;
        }

        $this->protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : false;
        $this->request_method = isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : false;
        $this->headers = array();

        foreach ($_SERVER as $i => $val) {
            if (strpos($i, 'HTTP_') === 0 || in_array($i, $this->add_headers)) {
                $name = str_replace(array('HTTP_', '_'), array('', '-'), $i);
                $this->headers[$name] = $val;
            }
        }
    }

    /**
     * Retrieve HTTP Method
     */
    function method() {
        return $this->method;
    }

    /**
     * Retrieve HTTP Body
     */
    function body() {
        return $this->body;
    }

    /**
     * Retrieve an HTTP Header
     * @param string Case-Insensitive HTTP Header Name (eg: "User-Agent")
     */
    function header($name) {
        $name = strtoupper($name);
        return isset($this->headers[$name]) ? $this->headers[$name] : false;
    }

    /**
     * Retrieve all HTTP Headers
     * @return array HTTP Headers
     */
    function headers() {
        return $this->headers;
    }

    /**
     * Return Raw HTTP Request (note: This is incomplete)
     * @param bool ReBuild the Raw HTTP Request
     */
    function raw($refresh = false) {
        if (isset($this->raw) && !$refresh) {
            return $this->raw; // return cached
        }

        $headers = $this->headers();
        $this->raw = "{$this->method}\r\n";
        foreach ($headers as $i => $header) {
            $this->raw .= "$i: $header\r\n";
        }

        //COMMENTED BY NAVEED //$this->raw .= "\r\n{$http_request->body}";
        return $this->raw;
    }

}

/**
 * Example Usage
 * Echos the HTTP Request back to the client/browser
 */
//$http_request = new http_request();
//$resp = $http_request->raw();
//echo nl2br($resp);
?>
